$(function(){
		    var regBtn = $("#submit1");
		    $("#agree").change(function(){
		        var that = $(this);
		        that.prop("checked",that.prop("checked"));
		        if(that.prop("checked")){
		            regBtn.prop("disabled",false)
		        
		        }else{
		            regBtn.prop("disabled",true)
		          
		        }
			})
});